I am on the search for new tires for my 2010 emotion MJD (stock size 175/70 R14) running on steel rims. Earlier i had planned for alloys also but budget constraints made me back out. One question though if i am changing the size to 185/70 R14, do i need to buy 5 in all? Question because, if i get one punctured would it be wise to drive with a spare wheel of different size? Also suggestions welcome for OK ish tires on stock size. I am not too much concerned about tyre noise.